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From the Surface Reconstruction section of the action bar, click Surfaces Network
.
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Select a curves network and a mesh.
- By default, all the wires are filled. They are identified with a green
mark.
- Requested continuities are visualized on edges shared by two wires.
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Optional: Select the Init Surface check box
and a surface.
- The init surface helps the computation by giving the shape of the result
surface.
- You can either select it yourself or let Surfaces Network compute
it in the direction of the largest contour.
- The init surface must be larger than the domain to process.
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To change the selection of wires to fill, use the context menu of a mark.
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identifies a wire to fill.
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identifies a wire not to fill.
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To change the type of continuity, use the context menu of a continuity symbol.
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represents a point continuity.
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represents a tangency continuity.
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Set the parameter values.
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For noisy clouds of points, select the Radius check box
and specify the radius.
When the cloud of points is noisy, it is difficult to have the surface going
through all the points and the curves (risk of undulations). The by-pass is to
delete points around the curves, within a given radius.
A sphere is displayed on the extremity of the first curve, representing the radius of the
circular pipe (if you have selected at least one curve and a cloud of points
or a mesh). Surfaces Network deletes the points
inside a circular pipe, with the given radius, centered on the curve.
Note:
If two curves are not distant enough, all the points between them may be
deleted, making the computation of the surface impossible.
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Set the Tension of the surface.
Possible values are between 0 and 4. Use a higher value
for a tenser surface.
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Key in the Order and Segments of
the resulting surface in the Standard
tab.
- These parameters apply globally to the surface computed.
- They are maximum values.
- The actual values are computed automatically by Surfaces Network.
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Optional: In the Advanced
tab, enter the order in U and V and the number of segments.
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Type the number of segments in each direction.
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Type the order of segments in each direction.
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Click Apply to restart the computation.
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Select the Compute with ribbons check box for a tangent
continuity between the wires.
Note:
This check box is only available if a mesh is selected.
The wires curves are projected on the mesh and a tangency ribbon
is computed on the mesh around the curve projection, and then taken into account
for the computation of the filling surface. The purple
double-headed arrow represents an internal constraint (G1 continuity,...) the
pink double-headed arrow represents an external constraint. The yellow square
with the pink arrow is the tangency plane, while the dotted lines represent the
tangency ribbons.
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Optional: Click Reset parameters to reset
the parameters.
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Check the results in the Results/Display
tab.
Information on the points for the parameters taken
into account by the computation are available in the box at the top of the tab (no dynamic display):
- The maximum deviation found between the points of the cloud and the
surface.
- The mean deviation found between the points of the cloud and the
surface. This deviation should be as small as possible.
- The percentage of points of the cloud that are below the mean deviation.
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Select display options.
- Spikes
- Segmentation to display the segmentation of
computed surfaces, number of segments and order in U and V.
- Display selection
- Display constraints
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In the Deviation box, enter the value above which the
deviation spikes are displayed.
When you first enter Surfaces Network, the
Deviation value is the same as the
Tolerance. Once a surface has been computed, the
Deviation value is the computed one.
- The surfaces are assembled (Tolerance = 0.1 mm).
- A Surface.xx element is created.
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